/*
 * super.c
 *
 * Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com>
 *
 * Licensed under the GNU GPL. See the file COPYING for details.
 *
 */

#include <linux/fs.h>
#include <asm/page.h> /* for PAGE_SIZE */

#include "befs.h"
#include "super.h"

/*
 * befs_load_sb -- Read from disk and properly byteswap all the fields
 * of the befs superblock
 */
int
befs_load_sb(struct super_block *sb, befs_super_block *disk_sb)
{
	struct befs_sb_info *befs_sb = BEFS_SB(sb);

	/* Check the byte order of the filesystem */
	if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_LE)
		befs_sb->byte_order = BEFS_BYTESEX_LE;
	else if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_BE)
		befs_sb->byte_order = BEFS_BYTESEX_BE;

	befs_sb->magic1 = fs32_to_cpu(sb, disk_sb->magic1);
	befs_sb->magic2 = fs32_to_cpu(sb, disk_sb->magic2);
	befs_sb->magic3 = fs32_to_cpu(sb, disk_sb->magic3);
	befs_sb->block_size = fs32_to_cpu(sb, disk_sb->block_size);
	befs_sb->block_shift = fs32_to_cpu(sb, disk_sb->block_shift);
	befs_sb->num_blocks = fs64_to_cpu(sb, disk_sb->num_blocks);
	befs_sb->used_blocks = fs64_to_cpu(sb, disk_sb->used_blocks);
	befs_sb->inode_size = fs32_to_cpu(sb, disk_sb->inode_size);

	befs_sb->blocks_per_ag = fs32_to_cpu(sb, disk_sb->blocks_per_ag);
	befs_sb->ag_shift = fs32_to_cpu(sb, disk_sb->ag_shift);
	befs_sb->num_ags = fs32_to_cpu(sb, disk_sb->num_ags);

	befs_sb->flags = fs32_to_cpu(sb, disk_sb->flags);

	befs_sb->log_blocks = fsrun_to_cpu(sb, disk_sb->log_blocks);
	befs_sb->log_start = fs64_to_cpu(sb, disk_sb->log_start);
	befs_sb->log_end = fs64_to_cpu(sb, disk_sb->log_end);

	befs_sb->root_dir = fsrun_to_cpu(sb, disk_sb->root_dir);
	befs_sb->indices = fsrun_to_cpu(sb, disk_sb->indices);
	befs_sb->nls = NULL;

	return BEFS_OK;
}

int
befs_check_sb(struct super_block *sb)
{
	struct befs_sb_info *befs_sb = BEFS_SB(sb);

	/* Check magic headers of super block */
	if ((befs_sb->magic1 != BEFS_SUPER_MAGIC1)
	    || (befs_sb->magic2 != BEFS_SUPER_MAGIC2)
	    || (befs_sb->magic3 != BEFS_SUPER_MAGIC3)) {
		befs_error(sb, "invalid magic header");
		return BEFS_ERR;
	}

	/*
	 * Check blocksize of BEFS.
	 *
	 * Blocksize of BEFS is 1024, 2048, 4096 or 8192.
	 */

	if ((befs_sb->block_size != 1024)
	    && (befs_sb->block_size != 2048)
	    && (befs_sb->block_size != 4096)
	    && (befs_sb->block_size != 8192)) {
		befs_error(sb, "invalid blocksize: %u", befs_sb->block_size);
		return BEFS_ERR;
	}

	if (befs_sb->block_size > PAGE_SIZE) {
		befs_error(sb, "blocksize(%u) cannot be larger "
			   "than system pagesize(%lu)", befs_sb->block_size,
			   PAGE_SIZE);
		return BEFS_ERR;
	}

	/*
	 * block_shift and block_size encode the same information
	 * in different ways as a consistency check.
	 */

	if ((1 << befs_sb->block_shift) != befs_sb->block_size) {
		befs_error(sb, "block_shift disagrees with block_size. "
			   "Corruption likely.");
		return BEFS_ERR;
	}


	/* ag_shift also encodes the same information as blocks_per_ag in a
	 * different way, non-fatal consistency check
	 */
	if ((1 << befs_sb->ag_shift) != befs_sb->blocks_per_ag)
		befs_error(sb, "ag_shift disagrees with blocks_per_ag.");

	if (befs_sb->log_start != befs_sb->log_end ||
	    befs_sb->flags == BEFS_DIRTY) {
		befs_error(sb, "Filesystem not clean! There are blocks in the "
			   "journal. You must boot into BeOS and mount this "
			   "volume to make it clean.");
		return BEFS_ERR;
	}

	return BEFS_OK;
}
<tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/phonet/Makefile?h=nds-private-remove&amp;id=adf200f31c000d707e4afe238ed1d1199e0cce7c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 09:37:34 +0100</td></tr>
<tr><th>committer</th><td>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 21:47:58 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/fs/nfsd/nfs2acl.c?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>0becc0ae5b42828785b589f686725ff5bc3b9b25</a> (<a href='/cgit.cgi/linux/net-next.git/patch/fs/nfsd/nfs2acl.c?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>be6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101</a> /<a href='/cgit.cgi/linux/net-next.git/tree/fs/nfsd/nfs2acl.c?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>fs/nfsd/nfs2acl.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/fs/nfsd/nfs2acl.c?id=24c2503255d35c269b67162c397a1a1c1e02f6ce'>24c2503255d35c269b67162c397a1a1c1e02f6ce</a> (<a href='/cgit.cgi/linux/net-next.git/diff/fs/nfsd/nfs2acl.c?id=0becc0ae5b42828785b589f686725ff5bc3b9b25&amp;id2=24c2503255d35c269b67162c397a1a1c1e02f6ce'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/mce: Make timer handling more robust</div><div class='commit-msg'>Erik reported that on a preproduction hardware a CMCI storm triggers the
BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is
started by the CMCI logic before the MCE CPU hotplug callback starts the
timer with add_timer_on(). So the timer is already queued which triggers
the BUG.

Using add_timer_on() is pretty pointless in this code because the timer is
strictlty per CPU, initialized as pinned and all operations which arm the
timer happen on the CPU to which the timer belongs.

Simplify the whole machinery by using mod_timer() instead of add_timer_on()
which avoids the problem because mod_timer() can handle already queued
timers. Use __start_timer() everywhere so the earliest armed expiry time is
preserved.

Reported-by: Erik Veijola &lt;erik.veijola@intel.com&gt;
Tested-by: Borislav Petkov &lt;bp@alien8.de&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Borislav Petkov &lt;bp@alien8.de&gt;
Cc: Tony Luck &lt;tony.luck@intel.com&gt;
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;

</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>Diffstat</a> (limited to 'fs/nfsd/nfs2acl.c')</div><table summary='diffstat' class='diffstat'>